My Inquiry
My Account
Microchip Technology LM2575-5.0YWM-TR
- Part No.:
- LM2575-5.0YWM-TR
- Manufacturer:
- Microchip Technology
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LM2575-5.0YWM-TR.pdf
- Description:
- IC REG BUCK 5V 1A 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,833
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2575-5.0YWM-TR from Micrel is a fixed-output 5.0V, 1A step-down (buck) switching regulator with 52kHz fixed-frequency operation, ±3% output voltage tolerance over line/load, and integrated thermal shutdown and cycle-by-cycle current limiting. It operates from 4V to 40V input and delivers high-efficiency regulation for industrial power rails and embedded DC/DC conversion.
For engineers reviewing the LM2575-5.0YWM-TR datasheet, LM2575-5.0YWM-TR pinout, LM2575-5.0YWM-TR application, or LM2575-5.0YWM-TR equivalent, key selection criteria include guaranteed 1A output current, TO-263-compatible 24-pin wide SOIC package, 82% typical efficiency at 12VIN/5VOUT/1A, and ON/OFF control with <200µA standby current.
Technical Context
The LM2575-5.0YWM-TR integrates a 52kHz oscillator, error amplifier, bandgap reference (1.23V), PWM comparator, and 1A NPN switch in a monolithic buck topology. Its fixed 5.0V output eliminates external feedback resistors, simplifying design versus adjustable variants.
Internal protection includes thermal shutdown triggered at 150°C junction temperature and peak current limiting at 1.7–3.2A. The device uses external components-inductor, catch diode, and input/output capacitors-to complete the buck converter, with no internal compensation required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±3% over 0.2–1A load and 8–40V input - ensures stable logic rail without trimming. |
| Max Output Current | 1A continuous - supports microcontroller, FPGA I/O, or sensor subsystems without external boost. |
| Input Voltage Range | 4V to 40V - accommodates 5V, 12V, 24V, and 36V industrial bus inputs with margin. |
| Switching Frequency | 52kHz ±10% - enables use of low-cost, standard 330µH inductors and reduces EMI filtering complexity. |
| Efficiency | 82% typical at 12VIN, 5VOUT, 1A - cuts heat sink requirements versus linear regulators. |
| Standby Current | <200µA when ON/OFF pin = 5V - enables low-power sleep modes in battery-backed systems. |
| Thermal Shutdown | Activates at 150°C junction - protects against sustained overload or poor heatsinking. |
Pinout & Package
The LM2575-5.0YWM-TR is housed in a 24-pin wide SOIC (WM) package with exposed thermal pad, optimized for surface-mount assembly and moderate power dissipation. Pin numbering follows standard SOIC layout with functional grouping across two sides.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 17, 18, 19, 20, 21, 22, 23 | VIN | Main input supply connection - must be decoupled with ≥100µF electrolytic capacitor near pin. |
| 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 | GND | Power and signal ground return - requires low-impedance PCB plane for stability and noise control. |
| 2 | OUT | Switch node output - connects to inductor and catch diode anode; high dI/dt path requiring short trace. |
| 15 | ON/OFF | Digital enable/disable control - logic-high (>2.2V) enables regulation; logic-low (<1.0V) disables with <200µA quiescent draw. |
| 24 | FB | Feedback - internally tied to 5.0V output; not used in fixed version but must remain unconnected. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0V output | Eliminates external resistor divider, reducing BOM count and layout sensitivity. |
| Integrated 1A NPN switch | Removes need for external MOSFET or transistor, lowering solution size and gate-drive complexity. |
| 52kHz fixed-frequency oscillator | Enables predictable EMI spectrum and compatibility with off-the-shelf 330µH inductors. |
| Thermal shutdown + current limit | Provides autonomous fault recovery without external monitoring circuitry. |
| ON/OFF logic control | Supports system-level power sequencing and standby states with minimal GPIO overhead. |
Applications
| Industrial PLC Power Supply | Embedded Microcontroller Rail |
|---|---|
Use Scenario: Providing clean 5V power to programmable logic controller (PLC) I/O modules operating from 24V DC field bus. IC Role / Device Role / Timing Role: Primary buck regulator converting unregulated 24V to isolated 5V logic rail. Use Value: Delivers 1A at 82% efficiency, eliminating need for heatsink and enabling compact DIN-rail mounted enclosure design. | Use Scenario: Powering ARM Cortex-M4-based edge node with peripherals including ADC, UART, and SPI flash. IC Role / Device Role / Timing Role: Main system regulator supplying core logic voltage with tight transient response. Use Value: Maintains ±3% output accuracy under 0.2–1A dynamic load steps, ensuring reliable MCU clock and analog performance. |
| Automotive Body Control Module | Point-of-Load Converter for Sensors |
Use Scenario: Generating 5V for body control unit (BCU) from 12V vehicle battery with cold-crank tolerance down to 4V. IC Role / Device Role / Timing Role: Input-stage buck regulator handling wide-input automotive transients. Use Value: Operates continuously from 4V–40V input, supporting ISO 7637-2 pulse 4 (cold crank) without dropout or reset. | Use Scenario: Local 5V supply for precision analog sensors (e.g., pressure, temperature) in factory automation equipment. IC Role / Device Role / Timing Role: Dedicated low-noise point-of-load regulator minimizing coupling into sensitive analog front-ends. Use Value: Fixed output eliminates resistor tolerance drift; 52kHz frequency allows effective LC filtering to suppress switching ripple below 10mVpp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575-5.0WU-TR | Same electrical specs; TO-263-5 package with single exposed tab for higher thermal conductivity. | Better thermal performance in high-ambient or sealed enclosures; requires different PCB footprint. | Select when junction temperature exceeds 125°C in SOIC package or when forced-air cooling is unavailable. |
| MP1584EN-LF-Z | 34V max input, 1.5A output, 1.5MHz switching, adjustable output - no fixed 5V variant. | Higher frequency enables smaller magnetics; requires external feedback resistors and more complex layout. | Choose for space-constrained designs needing sub-1mm height inductors, accepting added design effort. |
Compared with LM2575-5.0WU-TR, the LM2575-5.0YWM-TR offers identical regulation performance in a surface-mount SOIC package with standardized 24-pin layout, while MP1584EN-LF-Z trades simplicity for higher integration density and frequency flexibility at the cost of fixed-voltage convenience.
Availability
LM2575-5.0YWM-TR is available at Aetrix Electronics and suitable for industrial PLC power supplies, embedded microcontroller rails, automotive body control modules, and point-of-load sensor converters requiring stable component supply and long-term manufacturability.
Supply support for LM2575-5.0YWM-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Micrel Inc. was a U.S.-based semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The LM2575 series was designed as a drop-in, high-efficiency replacement for three-terminal linear regulators in industrial and embedded power applications, emphasizing simplicity, reliability, and minimal external component count.
FAQ
What is the maximum input voltage rating for LM2575-5.0YWM-TR?
The LM2575-5.0YWM-TR has an absolute maximum input voltage of 45V, with recommended continuous operation up to 40V. Exceeding 40V may trigger internal protection or reduce lifetime reliability. The device maintains regulation across its full 4V–40V operating range, making it suitable for 24V and 36V industrial systems with transient margin.
Does LM2575-5.0YWM-TR require external feedback resistors?
No, the LM2575-5.0YWM-TR is a fixed-output variant with internal feedback network set to 5.0V. Pin 24 (FB) is unused and must remain unconnected. This eliminates resistor tolerance errors and layout sensitivity, distinguishing it from adjustable versions like LM2575ADJ which require external R1/R2 dividers.
What thermal performance can be expected from LM2575-5.0YWM-TR in a standard PCB layout?
In a standard 2-layer PCB with ~1 in² copper area around the thermal pad, the LM2575-5.0YWM-TR exhibits θJA ≈ 100°C/W. At 1A output and 12V input, typical power dissipation is ~1.2W, resulting in ~120°C junction rise above ambient - well within the 125°C max operating TJ if ambient stays ≤25°C. For higher ambient, derating or additional copper is advised.
Can LM2575-5.0YWM-TR be used in negative-output (inverting) configurations?
Yes, the LM2575-5.0YWM-TR supports inverting buck-boost topology to generate negative voltages, as documented in Micrel's application notes. In this mode, the IC regulates the magnitude of the negative output (e.g., –5V) using the same internal 5.0V reference, with appropriate external component reconfiguration including reversed diode and capacitor polarity.
Is LM2575-5.0YWM-TR RoHS compliant?
Yes, the "Y" suffix in LM2575-5.0YWM-TR indicates Pb-free and RoHS-compliant packaging per Micrel's ordering information. The WM package uses lead-free solder plating and meets exemption criteria for high-melting-point alloys, verified through manufacturer documentation and distributor certifications.
LM2575-5.0YWM-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 52kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
LM2575-5.0YWM-TR FAQ
1.How can I place an order for LM2575-5.0YWM-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2575-5.0YWM-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM2575-5.0YWM-TR reliable?
The price and inventory of LM2575-5.0YWM-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2575-5.0YWM-TR is usually 5 days.
3.What payment methods are accepted for LM2575-5.0YWM-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2575-5.0YWM-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2575-5.0YWM-TR?
LM2575-5.0YWM-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2575-5.0YWM-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM2575-5.0YWM-TR?
For technical support, including LM2575-5.0YWM-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2575-5.0YWM-TR requirements.
6.How does Aetrix verify that LM2575-5.0YWM-TR is sourced from the original manufacturer or authorized distributors?
All LM2575-5.0YWM-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM2575-5.0YWM-TR meets industry standards.
7.What is the process for return or replacement of LM2575-5.0YWM-TR?
All LM2575-5.0YWM-TR units undergo pre-shipment inspection (PSI). If there is an issue with LM2575-5.0YWM-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM2575-5.0YWM-TR part is unused and in its original packaging.
Return procedure for LM2575-5.0YWM-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2575-5.0YWM-TR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
